Tropman’s research is in ethics and metaethics, with specific attention to moral realism, moral intuitionism, and the epistemology of moral judgment. Recent publications include "Formulating Moral Objectivity," "Varieties of Moral Intuitionism," "Evolutionary Debunking Arguments: Moral Realism, Constructivism, and Explaining Moral Knowledge," and "Making Sense of Explanatory Objections to Moral Realism."